PTR records on dynamic ipaddress
I have been told that having PTR/Reverse DNS records changed on the Name Servers that are authoritative for the IP space that you are on, is totaly a bad idea if you have a dynamic IP address(and even wont work so well, seeing that the PTR mapping would have to be changed each time your IP address changes and then changed back etc <-- which will take to much manual labour, and that is will take 1-7 days for the record to propagate etc etc).
But my question is this: Say your ISP is incharge of the IP space your hosts jump onto(and there DNS Name Servers are authoritative for the IP space) isent there someway that each time you authenticate with your username and password, for your ISP, it automatically dose the PTR mapping? Thanks Bruce |
Have had a look at your blog and you are obviously fairly new to this. (did leave a few observations).
Let's approach this from 2 different angles. Your isp provides you with a connection to their network to get onto the internet. Since you are joining their network you are assigned an ip address via dhcp (changes periodically) or you are assigned a static address. They have their own DNS servers which connect to higher level DNS servers but keep a database of domain names and their relevant ip addresses so that you are able to find them from your browser. Now if you want to or are hosting a registered domain name then you to have a way for the major DNS servers to store your ip address. If you have a static ip address this is quite easy as you get the registrar (who maintain the DNS records for the domain name) to point to your ip address. If you have a dynamic address it gets more difficult. You need an intermediate host like dyndns.org . Then you install a script that checks your ip address periodically and then updates the dns server at dyndns and they then update the upstream DNS servers. |
There is a standard for dynamic DNS updates (i.e. clients updating the servers), but I'm not aware of any ISPs that use it. It's potentially a huge security risk and for no gain to the ISPs. All it would do is make it easier for their customers to send e-mail without using the ISPs servers, which makes it harder to track spam.
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Bruce |
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nevermind done here |
I agree you did a poor job of explaining what you are trying to accomplish, I'm not sure exactly what you are asking for either..
Also it doesn't help to shoot the messenger (person offering assistance) after the fact. If you want automated mapping for a dynamic IP address, sign up with a Dynamic DNS provider.. http://www.dynip.com/ http://www.dyndns.com/ http://www.no-ip.com/services/managed_dns/ |
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I do however have some further observations that might help you in the future but you will probably not appreciate them or follow them up; 1. Your inability to use your home language (spell or construct coherent sentences) is going to hinder you greatly in future; Quote:
2. Having read your blog you have a very high opinion of your own ability but most of what you say, shows a total lack of basic knowledge on the subjects you talking about. Therefore do yourself, and other people a favour, and go and do some basic research ( Google is your friend ) before calling other people and organisations fools. As you say; Quote:
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Double post - deleted.
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